StopShopping/StopShopping.FileApi/Services/Extensions.cs

using FileSignatures;
using FileSignatures.Formats;
using StopShopping.FileApi.Services.Implementions;

namespace StopShopping.FileApi.Services;

public static class Extensions
{
    public static IServiceCollection AddServices(this IServiceCollection services, IConfiguration appOptions)
    {
        services.Configure<AppOptions>(appOptions);
        services.AddValidation();

        var imageFormats = FileFormatLocator.GetFormats().OfType<Image>();
        var imageInspector = new FileFormatInspector(imageFormats);
        services.AddSingleton<IFileFormatInspector>(imageInspector);

        services.AddScoped<IFileService, FileService>();

        return services;
    }

    public static string GetTargetDirectory(this UploadScences uploadScences)
    {
        return uploadScences switch
        {
            UploadScences.Avatar => "avatar",
            UploadScences.Product => "product",
            UploadScences.Category => "category",
            _ => throw new ArgumentOutOfRangeException(nameof(uploadScences))
        };
    }
}